In the work we highlight the structural features of 2D perovskite cuprates (tilted CuO6 octahedra with different orientation with respect to spacer rocksalt layers), where sources of charge and spin inhomogeneity can be hidden. We used the impurity Anderson model with the Jahn-Teller(JT) local cells to show the charge inhomogeneity arises at any low doping concentration x, but disappears when the doping level exceeds threshold concentration xc, and the lower the magnitudes xc, the more JT region square. It is expected that spontaneous chiral symmetry breaking in the dynamic JT state of the stripe CuO2 layer as a whole can lead to the appearance of the goldstone phonon mode. As consequence, the giant thermal Hall effect could be observed in the 2D perovskite cuprates with CuO6 octahedra, rather than with CuO4 squares, e.g. in Tl-based n layer cuprates or cuprates based on the infinite-layer CaCuO2 structure.
@article{arxiv.2306.02818,
title = {Lattice source for charge and spin inhomogeneity in 2D perovskite cuprates},
author = {Vladimir A. Gavrichkov and Semyon I. Polukeev},
journal= {arXiv preprint arXiv:2306.02818},
year = {2023}
}